The 40 Year Pollution Cleanup at Zionsville, Indiana

Environmental Chemical Company Dodges Cleanup for Over 30 Years
Corporate Misconduct Accountability Project

Environmental Chemical Company Dodges Cleanup for Over 30 Years

After contaminating soil and groundwater near Zionsville, Indiana with hazardous chemicals, over 230 corporations spent three decades negotiating partial fixes while residents lived with toxic pollution.

CRITICAL SEVERITY
TL;DR

Environmental Conservation and Chemical Corporation and approximately 235 other defendants contaminated a Superfund site near Zionsville, Indiana with hazardous substances. Despite a 1991 Consent Decree requiring cleanup, the remedy repeatedly failed to meet standards. Over three decades, the EPA had to force the settling defendants to implement additional work through amendments in 1998, 1999, 2006, and now 2024, while contamination migrated beyond the site boundaries and threatened local groundwater.

This case shows how corporations can delay environmental cleanup for generations while communities bear the health risks.

235
Original defendants in 1991 consent decree
33 years
Time from case filing to 2024 amendment
$850,000
Cap on oversight costs paid before 2003
$37,842
Settlement paid to State of Indiana for oversight costs through 2009

The Allegations: A Breakdown

⚠️
Core Allegations
What they did · 8 points
01 Environmental Conservation and Chemical Corporation and approximately 235 other defendants allowed hazardous substance contamination to spread through soil and groundwater at a site near Zionsville, Indiana, requiring federal Superfund intervention. high
02 The soil vapor extraction system installed to treat contamination failed to achieve the requisite cleanup standards even after five years of operation, forcing EPA to determine in March 2003 that additional work was required. high
03 The permeable reactive gate system installed in 2008 proved inadequate by 2011, with operations adversely affected by larger volumes of water than expected in the trench system after precipitation events. high
04 Contamination was detected migrating from the site to an area south of the original boundaries by 2016, demonstrating that the containment measures had failed. high
05 Settling defendants repeatedly required EPA approval and legal mandates before implementing each phase of cleanup work, rather than proactively addressing contamination. medium
06 The cleanup required a Resource Conservation and Recovery Act compliant cover over certain areas where hazardous substances were present, indicating significant surface contamination. high
07 Negotiations to amend the consent decree stalled after 2006, and the parties never reached full agreement on proposed work plans, yet proceeded with additional work anyway without formal court approval until now. medium
08 The companies suspended operation of the soil vapor extraction system and active dewatering in 2012 to investigate water sources, allowing contaminated water to passively collect in trenches. medium
🏛️
Regulatory Failures
How oversight fell short · 7 points
01 The original 1991 Consent Decree took over a decade to prove insufficient, with EPA not determining failure to meet cleanup standards until 2003, twelve years after the decree was entered. high
02 EPA published an Explanation of Significant Differences in 2006 stating that if they proceeded with the revised remedy, the agencies and defendants would seek to amend the consent decree, but that amendment was never finalized until 2024. high
03 The parties proceeded in good faith to implement measures from the 2006 ESD without formal court approval, allowing cleanup work to proceed outside the enforceable consent decree framework. medium
04 Negotiations to amend the consent decree stalled sometime after 2006, leaving the site operating under informal agreements rather than court-enforceable obligations for nearly two decades. high
05 The consent decree capped oversight costs at $850,000 for work through 2003, potentially limiting the State and EPA’s ability to fully monitor compliance without incurring unreimbursed expenses. medium
06 EPA repeatedly granted conditional approval with authorization to proceed pending entry of the stipulation, rather than requiring full compliance before work began. medium
07 The remedy required modification in 1998, 1999, 2006, and 2024, demonstrating that regulatory oversight failed to ensure an adequate initial cleanup plan. high
💰
Profit Over People
Financial interests prioritized · 6 points
01 The settling defendants implemented only the minimum work required by each consent decree modification, waiting for EPA to determine failures before proposing additional measures. high
02 Defendants negotiated a cap on oversight costs paid to the United States and Indiana, limiting their financial exposure to $850,000 through 2003 regardless of actual government expenses. medium
03 The companies allowed contamination to persist for years between each remedy modification rather than investing in comprehensive solutions upfront. high
04 Settling defendants suspended active pumping operations in 2012 and allowed passive collection of contaminated water, reducing operational costs while contamination continued. medium
05 The repeated design changes and partial implementations suggest a strategy of incremental compliance to minimize immediate expenditures rather than comprehensive remediation. medium
06 Defendants required 90 days after the 2024 stipulation just to submit a revised draft alternatives analysis report, further delaying selection of a long-term remedy. low
Exploiting Delay
How corporations stalled action · 8 points
01 The original case was filed in 1983, but the first consent decree was not entered until September 1991, allowing eight years of contamination to persist before formal remediation began. high
02 After EPA determined in March 2003 that cleanup standards were not met, it took until 2005 for parties to notify the court, and until February 2006 for a modification to be approved. high
03 The 2006 Explanation of Significant Differences stated parties would seek to amend the consent decree, but negotiations stalled and no amendment was finalized until January 2025, nearly 19 years later. critical
04 Settling defendants submitted the Work Plan for Active Pumping in August 2021, but it was not approved until September 2021, and implementation was further delayed pending the 2024 stipulation. medium
05 The Replacement Treatment Plant Design was submitted in August 2023 but received only technical approval with authorization to proceed held pending entry of the 2024 stipulation. medium
06 EPA approved multiple work plans on condition that authorization to proceed would be withheld pending entry of this stipulation, creating additional delay before implementation could begin. medium
07 The 2024 amendment allows defendants 90 days just to submit a revised alternatives analysis, meaning selection of an amended long-term remedy remains months or years away. medium
08 The consent decree establishes escalating penalties for delayed work, but only after 7 days, allowing companies a week of delay before any financial consequences begin. low
🏥
Public Health and Safety
Risks to local residents · 6 points
01 Hazardous substance contamination at the site threatened soil and groundwater near Zionsville, Indiana, putting local residents at risk of exposure to toxic chemicals. high
02 Contamination was detected migrating south of the original site boundaries by 2016, expanding the area where residents faced potential groundwater exposure. high
03 The soil vapor extraction system was designed to treat contamination in soil and groundwater, indicating volatile hazardous substances that could migrate through air and water pathways. high
04 The remedy required a Resource Conservation and Recovery Act compliant cover, suggesting contamination levels high enough to require isolation from direct contact and precipitation infiltration. high
05 Larger than expected volumes of water in the trench system after precipitation events indicated ongoing mobilization of contaminants that could reach groundwater aquifers. medium
06 Communities near the site lived with contamination from 1983 when the case was filed through at least 2024, a period of over 40 years of potential exposure. critical
🏘️
Community Impact
Local burdens · 5 points
01 Residents near Zionsville, Indiana have lived adjacent to a Superfund site for over 30 years while defendants negotiated partial cleanup measures. high
02 The site required installation of extraction wells south of the original boundaries, indicating contamination spread into additional residential or community areas. high
03 Cap extensions were required to address drainage and prevent contamination migration, suggesting the original remedy failed to protect neighboring properties. medium
04 The community faced uncertainty about groundwater safety while defendants conducted investigations and implemented partial remedies over multiple decades. high
05 Monthly progress reports were required but primarily went to regulatory agencies rather than being made transparently available to affected residents. medium
⚖️
Corporate Accountability Failures
Insufficient consequences · 7 points
01 The consent decree allows defendants to avoid liability for oversight costs above $850,000 paid before December 2003 and January 2009, capping their financial accountability. medium
02 Penalties for delayed work start at only $1,500 per day for the first week, rising to $9,000 per day after 60 days, amounts that may be insignificant compared to cleanup costs avoided. medium
03 The State of Indiana settled for $37,842.41 for all oversight costs through January 2009 and waived all other claims for that period, releasing defendants from potentially greater liability. medium
04 Defendants could proceed with work under conditional EPA approval pending court entry of the stipulation, allowing implementation before formal legal obligations were established. medium
05 The 2024 amendment preserves defendants’ ability to submit documents for EPA approval subject to modification or disapproval, giving them ongoing negotiating power over remedy scope. low
06 No individual executives or corporate officers are named as personally liable, allowing corporate entities to absorb costs without personal accountability for decision-makers. medium
07 The consent decree allows modification of Exhibit A by written stipulation without full court proceedings, enabling informal amendments outside public scrutiny. low
💸
Economic Fallout
Financial burden on taxpayers · 5 points
01 EPA and the State of Indiana incurred oversight costs that exceeded the $850,000 cap paid by defendants through 2003, forcing taxpayers to subsidize monitoring of corporate pollution. high
02 The government must continue incurring oversight costs for additional work beyond the original remedy, with no predetermined cap on future expenses. medium
03 Multiple rounds of investigation, design, and implementation since 1991 have required sustained government resources to oversee corporate compliance for over three decades. high
04 The 2024 amendment requires submittal of a revised alternatives analysis within 90 days, indicating EPA must dedicate additional staff time to review and approve yet another round of proposals. medium
05 EPA plans to issue a decision document selecting an amended remedy, requiring further agency resources to evaluate alternatives and conduct public comment periods. medium
📌
The Bottom Line
What this case reveals · 6 points
01 Environmental Conservation and Chemical Corporation and over 230 other defendants have avoided comprehensive cleanup for more than 30 years through repeated partial remedies and legal negotiations. critical
02 The case demonstrates how corporations can exploit complex regulatory processes to delay environmental restoration while contamination spreads and communities suffer. high
03 Even with a Superfund designation and multiple consent decrees, the site still lacks a finalized long-term remedy as of 2024, with additional analysis and decision-making required. high
04 The pattern of failed remedies followed by additional work requirements shows that initial corporate commitments were inadequate and enforcement mechanisms insufficient. high
05 Communities bear the health risks and economic costs of contamination while defendants negotiate incremental compliance measures over multiple decades. critical
06 The 2024 amendment represents another chapter in an ongoing saga, not a final resolution, with future remedial action plans still pending EPA approval and court adoption. high

Timeline of Events

1983
United States and State of Indiana file civil action against Environmental Conservation and Chemical Corporation and other defendants
September 1991
Court enters consent decree requiring approximately 235 defendants to implement remedy for hazardous substance contamination
1991
EPA issues Amended Record of Decision selecting soil vapor extraction system and RCRA compliant cap as remedy
May 1998
Court approves amendment deleting Section V.B.2 and replacing Exhibit A with revised remedial action plan
1999
Court approves stipulation adding design change for RCRA compliant cap and modifying Exhibit A
March 2003
EPA determines after consultation with Indiana that remedial action has not achieved requisite cleanup standards
2005
Parties notify court that SVE remedy failed to meet cleanup standards, triggering additional work requirements
February 2006
Court approves stipulation modifying additional work to include construction of thin barrier curtain wall
June 2006
EPA publishes Explanation of Significant Differences for public comment proposing changes to additional work
September 2006
EPA issues final Explanation of Significant Differences adopting changes to additional work
After 2006
Negotiations to amend consent decree stall and parties never reach full agreement on proposed work plans
2008
Permeable reactive gate system installed at site
2011
Parties determine PRGS system is not adequate and dual phase SVE system operation is adversely affected by water volumes
2012
Operation of SVE and active dewatering suspended to allow investigation of water sources in trenches
2016
After investigation completion, parties agree to additional measures to reduce flows and address contamination migrating south of site
August 2021
Settling defendants submit Work Plan for Active Pumping of ASVE Trench 6
September 2021
EPA approves Active Pumping Plan
November 2022
Settling defendants submit Revised Extraction Well Installation Work Plan
August 2022
Settling defendants submit Revised Cap Extensions with Drainage Improvements Construction Design Report
June 2023
EPA approves Revised Extraction Wells Plan as to technical aspects with authorization to proceed pending stipulation entry
July 2023
EPA approves Revised Cap Extensions Report as to technical aspects with authorization to proceed pending stipulation entry
August 2023
Settling defendants submit Basis of Design for Groundwater Treatment System Improvements and Water Collection Manhole Conveyance Line Work Plan
September 2023
EPA approves Replacement Treatment Plant Design as to technical aspects with authorization to proceed pending stipulation entry
November 2023
EPA approves Conveyance Line Plan as to technical aspects with authorization to proceed pending stipulation entry
January 2025
Stipulation and Order Amending Consent Decree and Modifying Exhibit A filed with court for lodging and public comment

Direct Quotes from the Legal Record

QUOTE 1 Original contamination scale allegations
“The Consent Decree required defendants to implement the remedy for hazardous substance contamination at the Environmental Conservation and Chemical Corporation Superfund Site (hereinafter, the ‘ECC Site’ or the ‘Site’) near Zionsville, Indiana, pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (‘CERCLA’), 42 U.S.C. § 9601 et seq.”

💡 Confirms the site required federal Superfund intervention due to hazardous substance contamination serious enough to invoke CERCLA.

QUOTE 2 Initial remedy failure allegations
“WHEREAS, in March 2003, EPA determined, after consultation with the State, that the remedial action had not achieved the requisite cleanup standards”

💡 EPA officially determined the remedy failed twelve years after the original consent decree was entered.

QUOTE 3 Permeable gate system failure allegations
“WHEREAS, after installation of the PRGS in 2008, the Parties determined around 2011 that the PRGS system was not adequate and that the operation of the PRGS and the dual phase SVE system was being adversely affected by, among others, the larger volumes of water than expected in the trench system after precipitation events”

💡 Another major remedial component failed within three years of installation, requiring suspension of operations.

QUOTE 4 Contamination migration beyond site allegations
“WHEREAS, in 2016, after completion of the investigation of the sources of the excess water in the trench system particularly after precipitation events, the Parties agreed to additional measures to reduce flows to the trench system and to address contamination that had recently been detected migrating from the Site to an area south of the Site”

💡 Contamination spread beyond original site boundaries, demonstrating containment measures failed.

QUOTE 5 Stalled negotiations for nearly two decades delay_tactics
“WHEREAS, sometime after the ESD was issued in 2006, negotiations to amend the Consent Decree stalled, the Parties never reached full agreement on Attachment Z-1 nor a Consent Decree amendment, and those documents were never finalized to lodge with this Court”

💡 Despite EPA issuing a decision document in 2006, formal legal amendments were not completed until 2024, an 18-year delay.

QUOTE 6 Work proceeded without formal approval regulatory
“WHEREAS, in order to expedite the environmental benefits provided by the Additional Work as set forth in the final ESD, the Parties proceeded in good faith to implement those measures consistent with the purpose of the Consent Decree to assure protection of human health and the environment, so that the elements described in EPA’s September 15, 2006 ESD were constructed and operated as Additional Work consistent with Section VII of the Consent Decree”

💡 Cleanup work proceeded outside formal court-approved consent decree modifications for nearly two decades.

QUOTE 7 Oversight cost cap accountability
“Settling Defendants shall not be liable for paying government oversight costs in excess of $850,000 incurred in overseeing the Work and paid by the United States prior to Dec. 2, 2003 and paid by the State prior to Jan. 1, 2009.”

💡 Defendants negotiated a cap limiting their financial responsibility for government oversight regardless of actual costs incurred.

QUOTE 8 State settlement and waiver accountability
“The Settling Defendants have paid to the State $37,842.41 in full settlement of the claims of the State for its oversight costs paid or incurred at the Site prior to January 1, 2009. The State, having received the $37,842.41, waives, releases, and discharges the Settling Defendants from any and all claims from the beginning of time for all oversight costs the State paid or incurred prior to January 1, 2009 at or in relation to the ECC Site.”

💡 Indiana settled for under $38,000 and waived all other claims for oversight costs over a 26-year period from case filing through 2009.

QUOTE 9 Escalating but modest penalties accountability
“For each day that any major milestone in Exhibit A or any of the Work and Additional Work identified in Paragraphs a through c below is delayed: Settling Defendants shall pay $1,500 for the first 7 days; $4,000 for the 8th through 30th days; $6,500 for the 31st through the 60th day; and $9,000 a day after the 60th day.”

💡 Penalties start low and take over two months to reach maximum of $9,000 per day, amounts that may not deter delay.

QUOTE 10 Long-term remedy still pending delay_tactics
“Within 90 days of the filing of the 2024 Stipulation and Order Amending Consent Decree and Modifying Exhibit A with the Court, Settling Defendants submit for approval by EPA (in consultation with the State) as Additional Work under Section VII of the Consent Decree a draft Revised Remedial Alternatives Analysis Report evaluating alternative remedies to assure remediation of contamination at and from the Site long-term”

💡 As of 2024, defendants still have 90 days just to submit an analysis, meaning selection of a comprehensive long-term remedy remains months or years away.

QUOTE 11 Future remedy will supersede current plan conclusion
“WHEREAS, following any issuance by EPA of a decision document selecting the amended remedy for the Site and EPA’s review and approval (in consultation with the State) of a Revised Remedial Action Plan to implement the amended remedy, the Parties intend that the approved Revised Remedial Action Plan will supersede the Combined Revised Exhibit A and the 2024 Exhibit A Update below creating the most recent, up-to-date, and comprehensive version of the remedy for the Site”

💡 The 2024 amendment is not the final remedy but another interim step, with a comprehensive plan still to be developed and approved.

QUOTE 12 Multiple failed remedy components allegations
“WHEREAS, the remedial action selected by the ROD consisted of, inter alia, installing and operating a soil vapor extraction (‘SVE’) system to treat contamination in the soil and groundwater and a Resource Conservation and Recovery Act– compliant cover over certain areas where hazardous substances were present (‘RCRA Compliant Cap’)”

💡 The original remedy required both vapor extraction and a specialized hazardous waste cap, indicating serious contamination levels.

QUOTE 13 Contamination required extraction wells beyond site allegations
“for component (c) referenced above, in 2022 and 2023 EPA (in consultation with the State) provided authorization for the Settling Defendants to proceed with the Additional Work outlined in the ‘Revised Extraction Well Installation Work Plan and Response to Comments of November 1, 2022’ which EPA modified and approved in June 2023 as to technical aspects and issued authorization to proceed pending entry of this Stipulation and Order (hereafter ‘Revised Extraction Wells Plan’)”

💡 Additional extraction wells had to be installed to control and treat groundwater that migrated south of the original site boundaries.

QUOTE 14 Public comment period reservation regulatory
“This 2024 Stipulation and Order Amending Consent Decree and Modifying Exhibit A shall be lodged with the Court for a period of not less than 30 Days for public notice and comment. The United States reserves the right to withdraw or withhold its consent if the comments regarding this amendment and modification disclose facts or considerations indicating that the amendment and modification is inappropriate, improper, or inadequate.”

💡 The government can still withdraw the agreement based on public comments, indicating this is not yet final as of filing.

QUOTE 15 Conditional approvals pending court entry delay_tactics
“the Settling Defendants submitted the ‘Basis of Design for Groundwater Treatment System Improvements Rev 1’ on August 4, 2023, which EPA approved on September 6, 2023, as to technical aspects with authorization to proceed pending entry of this Stipulation and Order (hereinafter ‘Replacement Treatment Plant Design’)”

💡 EPA approved technical plans but withheld full authorization for over a year pending court entry of this stipulation, further delaying implementation.

Frequently Asked Questions

What is the Environmental Conservation and Chemical Corporation Superfund site?
It is a hazardous waste site near Zionsville, Indiana where Environmental Conservation and Chemical Corporation and approximately 235 other defendants contaminated soil and groundwater with hazardous substances, requiring federal Superfund cleanup intervention under CERCLA beginning in 1983.
How long has this cleanup been going on?
The case was originally filed in 1983, with the first consent decree entered in 1991. The site has required ongoing cleanup efforts and repeated modifications to the remedy in 1998, 1999, 2006, and now 2024, spanning over 40 years with no final resolution yet achieved.
Why did the original cleanup fail?
The soil vapor extraction system installed to treat contamination failed to achieve the required cleanup standards even after five years of operation. EPA officially determined in March 2003 that the remedy had not met cleanup goals. Subsequent fixes also proved inadequate, including a permeable reactive gate system installed in 2008 that was determined inadequate by 2011.
Did contamination spread beyond the original site?
Yes. By 2016, contamination was detected migrating from the site to an area south of the original boundaries, requiring installation of extraction wells beyond the site perimeter and demonstrating that containment measures had failed.
How many companies were responsible?
Approximately 235 defendants were originally named in the 1991 consent decree. A 1998 amendment deleted some defendants, leaving a smaller number of settling defendants to implement the remedy going forward.
What penalties do companies face for delays?
The consent decree establishes escalating daily penalties starting at $1,500 per day for the first week of delay, rising to $4,000 per day for days 8 through 30, $6,500 per day for days 31 through 60, and $9,000 per day after 60 days.
How much have the responsible companies paid?
The companies negotiated a cap on oversight costs of $850,000 for work through December 2003. The State of Indiana received $37,842.41 to settle all oversight cost claims through January 2009. The total cleanup costs are not specified but likely run into millions given the decades of remedial work.
Why did it take so long to get a new consent decree amendment?
EPA issued an Explanation of Significant Differences in September 2006 modifying the remedy and stating that the parties would seek to amend the consent decree. However, negotiations stalled sometime after 2006, and the parties never reached full agreement on proposed work plans. The consent decree was not formally amended until January 2025, nearly 19 years later.
What happens next at this site?
Under the 2024 amendment, settling defendants have 90 days to submit a revised alternatives analysis report. EPA will then evaluate alternatives and issue a decision document selecting an amended long-term remedy. After that, defendants must submit a work plan within 90 days to implement the selected remedy. The actual completion of cleanup work remains years away.
What can concerned residents do?
The 2024 stipulation must be lodged for at least 30 days for public notice and comment. Residents can submit comments to the court and EPA expressing concerns about the adequacy of the proposed remedy, the lengthy timeline, and the need for stronger enforcement. The United States reserves the right to withdraw consent if comments reveal the amendment is inappropriate or inadequate.
Post ID: 2365  ·  Slug: the-40-year-pollution-cleanup-at-zionsville-indiana-epa-superfund  ·  Original: 2025-03-04  ·  Rebuilt: 2026-03-20

So the Department of Justice has a page for this: https://www.justice.gov/enrd/consent-decree/us-et-al-v-environmental-conservation-and-chemical-corporation-et-al

idk how long it’ll stay for, but the DOJ also got: https://www.justice.gov/enrd/media/1385236/dl?inline

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